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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8093d5f9124afe7f9a6c60f963fbf15caa3b12f929f74415aa36608893bc8858' 
  AND token = 'ljK1gjgmnJwkNhjdSssbO7R5CdP9C5yeyF2gq4QdR6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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