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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce4169ebfc3129b55520494b96a39e5616f8f922de928cd29fff105cf622a3c0' 
  AND token = 'mCYp5S8xHS1OLsi2vuiQHV5Ea5ofaf/0Fbvt/FI5O/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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