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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0a05240d5085ec8a3a39856d89060fb26272584db07bce5ee18dd0bfbc6c858' 
  AND token = 'G9j55iTALB0xbGF54Rx9/t/ghpRQzeFAuaxo9Bu4SiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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