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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de2c273bf67570c9efcf778ff5073267ef4e33c36402cab6532d8257d67bbe59' 
  AND token = 'aI0nVpTelJxlwA7gMU7W5K/Dk6/wzGoOid6PHKUzyjU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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