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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '002ea94b5a2c15aa7f323b7fa4591658ad0d1864abcbb90abec06c5de89653c6' 
  AND token = '2H6XridQFY4Xord7sWc+6ihHGkRU5ih1WJBMwVlBT1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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