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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58b06e1ae0ca90fd71f99088400d5557f53eb381b68983739aba6a0cb9c40f8b' 
  AND token = 'L0HSzN8sZle1shl6ALXZYw4yEjS4ZIpz6z3deWq2uVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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