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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f10a45759cfa08ef471467a978d69d087006ff7d14e50ef8c55274739d21ad2f' 
  AND token = 'CCPR1zlNGfGsdX4o5W0WMTYGRLixxiCiYVKS7BFYXrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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