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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07b2ea95a85d99498e793f693b2557a0b6bc3d0dac822bea8c4010a9f5fac4a6' 
  AND token = 'VkQYCQgI0FAsGzIIDvmbdKHLtKQjxx1ajwyj20rDNl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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