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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9f77f43f28f53be0696157c6a121507c0b73c2e90077aa154cc70ae37b007ef' 
  AND token = 'L4P1w7rhHoSaIoy9AprnlHtf0yyS9j1BpNePvRFrbG8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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