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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd487e4f2b607385e002a5ddff59a7d7a088d18dedac8c0c2178ddab8d77624bb' 
  AND token = 'E0QZQchuEKX6AW6Q/PK8nAaDUUn/Rtq5gkXc5gILxqs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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