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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eb5787d2d1b37bd275b19eb568a0ff06b23f55e70d93d43e7b6712dd6ba4012' 
  AND token = 'NMSln3AYjYi0HYPOEvEx3n6y0Rk1suOd58bOBvJzJCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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