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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba5a0a0d419dbe231184ed3c0bd64d80d3bd75b33ce0e5ef12a907be2957955e' 
  AND token = 'NFljR4VqqI+/KgKl+EItrOn0QrNeE85t0txwOhxELOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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