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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fde0601d41f123b03efc4f7bab2906be547fe507d875f7172321c9d79b42eeb' 
  AND token = 'EPUhMqbfT//CMbx/lWTwI722Ie0FkJYOCgYJ2KtfBvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}