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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e036f32282e61c13aa68b94072d2d34cd904524100d6b2caaf705e9597505880' 
  AND token = '1FXheccrmWXF/JzST9jx4Sc5+5frWKn6IbNTt3e2vVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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